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Google Search Operators: The Complete List (44 Advanced Operators)

Google Search Operators: The Complete List (44 Advanced Operators) Working Search operator What it does Example " " Search for results that mention a word or phrase. "steve jobs" OR Search for results related to X or Y. jobs OR gates | Same as OR. jobs | gates AND Search for results related to X and Y. jobs AND gates - Search for results that don’t mention a word or phrase. jobs -apple * Wildcard matching any word or phrase. steve * apple ( ) Group multiple searches. (ipad OR iphone) apple define: Search for the definition of a word or phrase. define:entrepreneur cache: Find the most recent cache of a webpage. cache:apple.com filetype: Search for particular types of files (e.g., PDF). apple filetype:pdf ext: Same as filetype: apple ext:pdf site: Search for results from a particular website. site:apple.com related: Search for sites related to a given domain. related:apple.com intitle: Search for pages with a particular word in the title tag. intitle:apple allintitle: Search for pages with multiple words in the title tag. allintitle:apple iphone inurl: Search for pages with a particular word in the URL. inurl:apple allinurl: Search for pages with multiple words in the URL. allinurl:apple iphone intext: Search for pages with a particular word in their content. intext:apple iphone allintext: Search for pages with multiple words in their content. allintext:apple iphone weather: Search for the weather in a location. weather:san francisco stocks: Search for stock information for a ticker. stocks:aapl map: Force Google to show map results. map:silicon valley movie: Search for information about a movie. movie:steve jobs in Convert one unit to another. $329 in GBP source: Search for results from a particular source in Google News. apple source:the_verge before: Search for results from before a particular date. apple before:2007-06-29 after: Search for results from after a particular date. apple after:2007-06-29 Unreliable Search operator What it does Example #..# Search within a range of numbers. iphone case $50..$60 inanchor: Search for pages with backlinks containing specific anchor text. inanchor:apple allinanchor: Search for pages with backlinks containing multiple words in their anchor text. allinanchor:apple iphone AROUND(X) Search for pages with two words or phrases within X words of one another. apple AROUND(4) iphone loc: Find results from a given area. loc:"san francisco" apple location: Find news from a certain location in Google News. location:"san francisco" apple daterange: Search for results from a particular date range. daterange:11278-13278 Not working (officially dropped by Google) Search operator What it does Example ~ Include synonyms in the search (dropped 2013). ~apple + Search for results mentioning an exact word or phrase (dropped 2011). jobs +apple inpostauthor: Search for posts by a specific author in Google Blog Search (discontinued). inpostauthor:"steve jobs" allinpostauthor: Same as inpostauthor:, but removes the need for quotes. allinpostauthor:steve jobs inposttitle: Search for posts with certain words in the title in Google’s discontinued Blog Search. inposttitle:apple iphone link: Search for pages linking to a particular domain or URL (dropped 2017). link:apple.com info: Search for information about a specific page or website (dropped 2017). info:apple.com id: Same as info: id:apple.com phonebook: Search for someone’s phone number (dropped 2010). phonebook:tim cook # Search for hashtags on Google+ (dropped 2019). #apple

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nginx 添加第三方nginx_upstream_check_module 模块实现健康状态检测

nginx 添加第三方 nginx_upstream_check_module 模块实现健康状态检测 nginx_upstream_check_module Health check HTTP servers inside an upstream nginx.conf http { upstream cluster { # simple round-robin server 192.168.0.1:80; server 192.168.0.2:80; check interval=5000 rise=1 fall=3 timeout=4000; #check interval=3000 rise=2 fall=5 timeout=1000 type=ssl_hello; #check interval=3000 rise=2 fall=5 timeout=1000 type=http; #check_http_send "HEAD / HTTP/1.0\r\n\r\n"; #check_http_expect_alive http_2xx http_3xx; } ... check syntax: *check interval=milliseconds [fall=count] [rise=count] [timeout=milliseconds] [default_down=true|false] [type=tcp|http|ssl_hello|mysql|ajp|fastcgi]* 默认配置:interval=3000 fall=5 rise=2 timeout=1000 default_down=true type=tcp* ... interval: 检测间隔 3 秒 fall: 连续检测失败次数 5 次时,认定 relaserver is down rise: 连续检测成功 2 次时,认定 relaserver is up timeout: 超时 1 秒 default_down: 初始状态为 down,只有检测通过后才为 up type: 检测类型方式 tcp tcp :tcp 套接字,不建议使用,后端业务未 100%启动完成,前端已经放开访问的情况 ssl_hello: 发送 hello 报文并接收 relaserver 返回的 hello 报文 http: 自定义发送一个请求,判断上游 relaserver 接收并处理 mysql: 连接到 mysql 服务器,判断上游 relaserver 是否还存在 ajp: 发送 AJP Cping 数据包,接收并解析 AJP Cpong 响应以诊断上游 relaserver 是否还存活(AJP tomcat 内置的一种协议) fastcgi: php 程序是否存活 example